Burner.



E. A. EDWARDS.

BURNER.

APPLICATION FILED MAR. 4. Isla.

1,275.1., Imam@ Aug. 13, 1918.

INvENToR 27m 71 gdm/m WITNESSES y milf ATTOR N EY rms ca. Fnmuumn. wasuuvo mu. D. c.

" TED srnrns PATENT omnes.

i Evan A. EDWARDS, or rnnsco'rr, ARIZONA.

BURNER.

To all @comit may concern:

Be it known that I, EVAN A. EDWARDS, a citizen of the United States, residing at Prescott, in the county of Yavapai andState more particularly to the type employed foi"` burning crude Orland pulverized `coal in con"` nection With various kinds of furnaces. j

The main object ofthe invention `is to provide a simply constructed and eihcient burner of this character in which fthe fuel is thoroughly broken up and" `enters the furnace ina state to provide a maximum amount of heat with a minimum consumption of fuel.`

Another object is to provide a burner of` this character in which the fuel drawn in is struck by three jetsof steam or compressed air and which is combined Withhot air andl thoroughly mixed by jets of steam before H positesides thereof and Will thus thoroughly being discharged into the fire` box.

Another object is to provide simple means for regulating` the compressed fluid used` for disrupting the fuel and drawing inthe hot air to be commingled therewith.

With the foregoing and other objectsl `im view, Which Will appear as the description proceeds, the invention resides inthe combination and arrangement of parts and 1n the details of construction `hereinafter described and claimed, it being understood that changes inthe precise embodiment of the invention herein disclosed may be made With` in the scope of What 1s claimed Without de-` parting from the spirit of the inventiom In the accompanying dravvingsz-` Figure 1 represents a longitudinal verti cal section through a burner constructed in accordance With this invention,

Fig. 2 is an end vievv thereof taken from the front, and Y y ,i y n l Fig.` 3 is a transverse "vertical sectron taken on the line 3-3 of Fig. lloolriug in the direction of the arrow'.

The burner constituting this invention comprises an outer casing 1 and an inner casing 2, hereshovvn rectangular in cross section, although obviously they may vary in configuration if found desirable. The

casing 2 is of the same diameter in onedi-` rection as that of casing 1 so that its side Walls 3 will closely contact With those of casing 1. The other diameter of the inner Y Specicationoif Letters Patent. i Patented Aug. 13, 1918. i Application 1ed`Marc114,1918. Serial No. 220,310. i i

casing Q being less than that `of casing 1 to provide channels 4 at opposite sides of the burner throughivhich the compressed fluid is designed to pass as Will be presently described. The casing 2 is made shorter than casing 1 to provide a chamber at the rear thereof into which the `compressed fluid, preferably steam, is fed through a pipe G and which passes `around through the Ichan`` nels it at opposite sides ofthe casing and out through the `nozzle at the front end thereof which is formed by the converging side walls ofthe ends of the two casings as shown clearly in Fig. 1, the channels 7 formed by these converging Walls being arranged obliquely andin planes converging toward thefront end of the burner and vvhich surround the opening 8 in the front end of casing 2 through which the atomized fuel mixed With `hot air is discharged, itbeing thus seen that the tivo discharging jets of steam passing through the channel 7 will strike the fuel discharge stream at oblique angles on opco-mmingle With said outpassing stream of fuel and thoroughly atomize itvbefore its entrance into the firebox. j

The fuelis fed into the inner `chamber 2 through a pipe 9 opening through one side Wall thereof at the rear end of the casing,l

11 in its rear Wall ing transversely thereof and through Which projects a headed stud 14C carried by the rear end Wall of casing 2 so that said slide` may be adjusted to vary the size of the opening 11 to regulate the compressed fluid fed therethrough and which is designed to atomize the oil entering through pipe 9 andto draw in the hot air through pipe 10, it being" obvious that the size of this opening 11 When increased by moving the slide 12 upwardly Will permit a larger" quantity of compressed fluid to `enter the casing 2 than when the slide is moved to decrease the size of the opening. This slide is adjustable in the same manner that the needle valve of a carbureter is operated, and the burner operates very much on the same principle as a carbureter.

In the operation of this burner, the compressed fluid, Which is preferably steam,

enters casing l at the rear end thereof through the pipe 6, passes into the chamber and a part enters casing 2 through the opening ll, While the remainder passes out of the casingthrough the channels 4f and the obliquely disposed'discharge channels 7 at its front end.

' The fuel entering the inner chamber lor casing'2V through the pipe 9, andwhich is preferably in the `form of crude oil comes in contact with the inrushing steam enteringl through opening 1 1 which is disposed adjacent the inlet of pipe 9 into said casing and is disruptedby said contact and atomized.y The fuel entering the chamber 2 also comes in contactjivi-th the heated air' from pipe lOvhieh is drawn into the casing 2 by the passage of the steam through said casing and isV commingleduwith vthe atomized oil, and in lheated condition, said oil passes through the contracted, opening 8 at the front end of the chamber 2 Where it is struck by the'j ets of ste-am emerging from the converging channels 7. These jets of steam commingle With the outward passing fuel jet, thoroughly mixing the atomized oil with the hot air and more iinely atomizing it during its passage into the iirebox which is not herein shown, as it forms no part of the invention. The amount of fuel drawninto the casingv2 and passed out into the fuel box` is controlled by varying the sizeof the opening l1 by adjusting the slide 12 in the mannen above described.Y It Will thus be seen that the commingling of `the fuel in chamber 2 With nthe hot air entering through pipe 10 and the steam entering through opening 1 1, atomizesthe oil and renders it Vhighly combustible sothat when, it is discharged-through the nozzle of the burner into the 'fire box and combined With the lsteampassing throughthe jet opening 7, it

VWillxb'e inysfuch'condition that a maximum amount of heat will be generated ywith a minimum :consumption ofl o1l.

It Will thus be seen that this structure,

While very eiiicacious in use, is very simple 1n,v construction, and 1f any of the parts thereof shouldbecome broken they may bev readily repaired at a very small expense.

` The converging side Wallsat the front end eolies of'th'is patera Vmay be @swirledV for vfrom a separate piece of metal riveted at yits inner end to a boss 15 formed at the outer end of chamber l, but obviously it need -notrnecessarily be so formed, but may be that such changes may be made as are Within the scope of the claimed invention.

I claim l. A burner of the class described comprisingtivo easings arranged one within the other and spaced apart at diametrically opposite Vsides to form steam channels, the front ends of said casings converging to form a discharge nozzle, the inner casing being spaced at its rear end from the rear end of the outer casing to form a steam chamber communicating with said channels and` with the interior of said inner casing, air and fuel inlets for said inner casing, and a steam inlet for said outer casing.

A burner of the class described compris-ing a mixing chamber having a discharge at one end and an inlet opening at its otherend, an adjustable slide for con trolling the size of said inlet opening, a steam chamber surrounding the end of said mixing chamber having the inlet opening therein, means for supplying steam to said steam chamber, steam channels leading from said steam chamber on opposite sides of the mixing chamber and having their front ends converging, and fuel and hot air pipes opening into said mixing chamber at the end having the inlet.

In testimony whereof I ailix my signature in presence of two Witnesses.

EVAN A. EDWARDS.

Witnesses:

J. C. NORTON, A. H. BARBER,

five cents each, by addressing the "Commissioner of Patents. Washington, I). C. 

